I know this is a rather new feature however some improvements would make it more user friendly and better:

1) Allow non technicians to raise purchase orders, not just purchase requests.

2) Allow a finance department to update all purchase orders IE add invoice status and mark as paid etc.

3) Link Purchase Ordered to site / user / group who raised the order, this will mean that purchase orders raised by 1 group or site will not appear to another group/site.

It would also be useful to allow technicians the ability to amend the products offered by the suppliers, currently only a user with SDAdmin rights can amend the products via the Asset management admin menu.